root/memdump/com16.ld

Revision 5a16eeb519c87fa4c437e838af81731b8d355052, 3.6 KB (checked in by H. Peter Anvin <hpa@…>, 5 years ago)

memdump: a debugging utility to dump memory over a serial port

A memory-dumping utility which runs in real mode. Thus, it can be
used to get memory dumps from a relatively pristine system.

  • Property mode set to 100644
Line 
1/*
2 * Linker script for COM16 binaries
3 */
4
5/* Script for -z combreloc: combine and sort reloc sections */
6OUTPUT_FORMAT("elf32-i386", "elf32-i386",
7              "elf32-i386")
8OUTPUT_ARCH(i386)
9EXTERN(_start)
10ENTRY(_start)
11SECTIONS
12{
13  /* Read-only sections, merged into text segment: */
14  . = 0x100;
15  PROVIDE (__executable_start = .);
16
17  .init           :
18  {
19    KEEP (*(.init))
20  } =0x90909090
21  .text           :
22  {
23    *(.text .stub .text.* .gnu.linkonce.t.*)
24    /* .gnu.warning sections are handled specially by elf32.em.  */
25    *(.gnu.warning)
26  } =0x90909090
27  .fini           :
28  {
29    KEEP (*(.fini))
30  } =0x90909090
31  PROVIDE (__etext = .);
32  PROVIDE (_etext = .);
33  PROVIDE (etext = .);
34  .rodata         : { *(.rodata .rodata.* .gnu.linkonce.r.*) }
35  .rodata1        : { *(.rodata1) }
36
37  /* Ensure the __preinit_array_start label is properly aligned.  We
38     could instead move the label definition inside the section, but
39     the linker would then create the section even if it turns out to
40     be empty, which isn't pretty.  */
41  . = ALIGN(4);
42  PROVIDE (__preinit_array_start = .);
43  .preinit_array     : { *(.preinit_array) }
44  PROVIDE (__preinit_array_end = .);
45  PROVIDE (__init_array_start = .);
46  .init_array     : { *(.init_array) }
47  PROVIDE (__init_array_end = .);
48  PROVIDE (__fini_array_start = .);
49  .fini_array     : { *(.fini_array) }
50  PROVIDE (__fini_array_end = .);
51  PROVIDE (__ctors_start = .);
52  .ctors          :
53  {
54    KEEP (*(SORT(.ctors.*)))
55    KEEP (*(.ctors))
56  }
57  PROVIDE (__ctors_end = .);
58  PROVIDE (__dtors_start = .);
59  .dtors          :
60  {
61    KEEP (*(SORT(.dtors.*)))
62    KEEP (*(.dtors))
63  }
64  PROVIDE (__dtors_end = .);
65
66  /* Adjust the address for the data segment.  Avoid mixing code and
67     data within same 128-byte chunk. */
68  . = ALIGN(128);
69
70  .data           :
71  {
72    *(.data .data.* .gnu.linkonce.d.*)
73    SORT(CONSTRUCTORS)
74  }
75  .data1          : { *(.data1) }
76  _edata = .;
77  PROVIDE (edata = .);
78  __bss_start = .;
79  .bss            :
80  {
81   *(.dynbss)
82   *(.bss .bss.* .gnu.linkonce.b.*)
83   *(COMMON)
84   /* Align here to ensure that the .bss section occupies space up to
85      _end.  Align after .bss to ensure correct alignment even if the
86      .bss section disappears because there are no input sections.  */
87   . = ALIGN(32 / 8);
88  }
89  . = ALIGN(32 / 8);
90  _end = .;
91  PROVIDE (end = .);
92
93  /* Stabs debugging sections.  */
94  .stab          0 : { *(.stab) }
95  .stabstr       0 : { *(.stabstr) }
96  .stab.excl     0 : { *(.stab.excl) }
97  .stab.exclstr  0 : { *(.stab.exclstr) }
98  .stab.index    0 : { *(.stab.index) }
99  .stab.indexstr 0 : { *(.stab.indexstr) }
100  .comment       0 : { *(.comment) }
101  /* DWARF debug sections.
102     Symbols in the DWARF debugging sections are relative to the beginning
103     of the section so we begin them at 0.  */
104  /* DWARF 1 */
105  .debug          0 : { *(.debug) }
106  .line           0 : { *(.line) }
107  /* GNU DWARF 1 extensions */
108  .debug_srcinfo  0 : { *(.debug_srcinfo) }
109  .debug_sfnames  0 : { *(.debug_sfnames) }
110  /* DWARF 1.1 and DWARF 2 */
111  .debug_aranges  0 : { *(.debug_aranges) }
112  .debug_pubnames 0 : { *(.debug_pubnames) }
113  /* DWARF 2 */
114  .debug_info     0 : { *(.debug_info .gnu.linkonce.wi.*) }
115  .debug_abbrev   0 : { *(.debug_abbrev) }
116  .debug_line     0 : { *(.debug_line) }
117  .debug_frame    0 : { *(.debug_frame) }
118  .debug_str      0 : { *(.debug_str) }
119  .debug_loc      0 : { *(.debug_loc) }
120  .debug_macinfo  0 : { *(.debug_macinfo) }
121  /* SGI/MIPS DWARF 2 extensions */
122  .debug_weaknames 0 : { *(.debug_weaknames) }
123  .debug_funcnames 0 : { *(.debug_funcnames) }
124  .debug_typenames 0 : { *(.debug_typenames) }
125  .debug_varnames  0 : { *(.debug_varnames) }
126  /DISCARD/ : { *(.note.GNU-stack) }
127}
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